Figure 4. Inhibition of CaMKII increases ‘on’ bipolar cell flash sensitivity.

Inward current responses to flashes in the dark ranging from 0.0625 to 8 Rh* recorded just after achieving whole-cell clamp (upper traces, Control) and on equilibration (12 min after achieving whole-cell clamp) with 20 μm CaMKIIi and 50 μm Ca²⁺ (lower traces) from the recording illustrated in Fig. 3. The timing of the flashes is indicated by the arrows above the records.